Honda BF40D Mode D'emploi page 478

• Fuel Pump (High Pressure Side) Main Wire Harness Inspection
1) Fuel pump (high pressure side) power line open-
circuit inspection
a. Turn the combination switch OFF and disconnect
the fuel pump (high pressure side) 2P connector
.
4
b. Turn the combination switch ON. Measure the
voltage between the fuel pump (high pressure side)
2P connector main wire harness side No.2
4
(Blue/Red) terminal and the engine ground.
FUEL PUMP (HIGH PRESSURE SIDE)
2P CONNECTOR
MAIN WIRE HARNESS SIDE
(Blue/Red)
VIEWED FROM THE TERMINAL SIDE
Is there the battery voltage?
YES - Go to "2) Fuel pump (high pressure side)
GND line open-circuit inspection."
NO - Check the No.2 fuse and main relay (P. 18-17,
18). If there is no problem, replace the main
wire harness.
5-83
4
478
2) Fuel pump (high pressure side) GND line open-circuit
inspection
a. Turn the combination switch OFF and disconnect
the ECM connector A
9
b. Check for continuity between the ECM connector A
main wire harness side No.16 (Black/White)
9
terminal and the fuel pump (high pressure side) 2P
connector main wire harness side No.1
4
(Black/White) terminal.
ECM CONNECTOR A
MAIN WIRE HARNESS SIDE
9
FFP
(Black/White)
4
FUEL PUMP
(HIGH PRESSURE SIDE) 2P
CONNECTOR
MAIN WIRE HARNESS SIDE
Is there continuity?
YES - Go to the step c.
NO - Repair open in the main wire harness
between the ECM and the fuel pump (high
pressure side).
.
VIEWED FROM THE
TERMINAL SIDE